But ever since 2 weeks back, 4 ASD are deployed (Incl 3720L) has
been deployed to replace 3 non aircon bus. 3623 is one of them. It
is left idling at TPY Int sometimes and used by SBST staff. The ASD
deployment is during peak hrs only. In fact, between 1640-1712, all
90 buses leaving TPY Int are all aircon buses